GRSF is designed to handle the information on stock monitoring that countries perform directly or through the Regional Fishery Bodies (RFBs). GRSF contributes to enhance the global monitoring by i) collating records from either national or regional sources, ii) organizing and storing stock information according to specific data standards and protocols which allow comparability between records and consistency of the database, and iii) assigning and publishing Global Unique Identifier for single stock standard identification. GRSF has already gathered and organized about 3,000 stock records from 3 participating partners’ data sources. The quality control and information cleaning work is in progress (e.g., identifying/connecting duplicates), and about 2,000 records for unique stocks are expected at the end of that process. Many stakeholders from industry, NGOs, technology companies, etc. believe the success of technology companies to develop seafood traceability solutions to meet the future global demand is based on standardized fishery identifiers. To this end, about 9,000 fishery records (fishing operations) have been also gathered through the collation, processing and harmonization of source records. Likewise for Stocks, the final published number of fishery records is expected to be lower. The GRSF proposes a global standard for Unique Identifiers of stocks and fisheries: i) a Universally Unique Identifier, machine readable code to respond to whatever global IT standard, and ii) a Semantic Identifier, human readable code with standard codes and labels. This tutorial presents the online catalogue of stocks and fisheries and focus on the methodology used to build the database (selection of data standards, unique identifiers logic, associated information to stock and fisheries).